Well if i was u i just use kind of wet towel and just wipe it clean.
And don't use anything on the top.It might look nice now but in the long run it bad for u.Believe me this is from experince,i used to own FM2 miata(stolen )

 

I use a California Dash Duster. Works great on the whole interior. Plus, I don't have trash to throw away and no wipes to buy.....ever. It was only like $10.

 

I use Vinylex (from Lexol) on the top and all the interior plastic. Works great, looks great and protects against UV.